基于蒙特卡洛法的溶解性总固体测量不确定度评定

目的研究出一种基于蒙特卡洛法的溶解性总固体测量不确定度评定的方法。方法按照溶解性总固体实验过程,建立对应的数学模型。根据蒙特卡洛法分布传播和总结过程,得出蒙特卡洛法的评定结果。同时使用Guide 98-3:2008《测量不确定度表示指南》进行评定,得出对比结果。结果使用蒙特卡洛法所得结果为208.0 mg/L,扩展不确定度为5.2 mg/L。区间为197.82~218.18 mg/L。指南法评定结果为208.6 mg/L,扩展不确定度为5.6 mg/L,计算结果为(208.6±5.6)mg/L。结论蒙特卡洛法评定结果与测量不确定度表示指南法评定的数据相近,可以用于计算溶解性总固体的测量不确定度,为实验室工作人员提供了一种实用的测量不确定度评定方法。

Uncertainty evaluation of determination of total dissolved solids based on Monte Carlo method

Objective This paper is to develop a method for assessing the uncertainty of total dissolved solids based on the Monte Carlo method by establishing a corresponding mathematical model according to the total solid state experiment. Method It is based on the total solid state experiment, and the corresponding mathematical model is established. According to the Monte Carlo method, the method of Monte Carlo method is obtained. Results It is show that the uncertainty obtained by using this method is close to the data of the uncertainty of the measurement uncertainty, which can reflect the uncertainty components introduced by the experiment. Conclude The Monte Carlo method can be used to assess the uncertainty of the total dissolved solids, providing a practical measurement uncertainty for laboratory staff.